Robert Allen Janssen
54Patents
16h-index
57Co-inventors
87Inventor score
Filing activity: Oct 8, 1980 → Jun 1, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7673516B2 | Ultrasonic liquid treatment system | Performing Operations; Transporting | 89 | Active |
| US5805264A | Process for graft polymerization on surfaces of preformed substates to modify surface properties | Emerging Cross-Sectional Technologies | 76 | Expired |
| US4968532A | Process for graft copolymerization on surfaces of preformed substrates to modify surface properties | Chemistry; Metallurgy | 63 | Expired |
| US4978481A | Process for the encapsulation of preformed substrates by graft copolymerization | Chemistry; Metallurgy | 60 | Expired |
| US4589964A | Process for graft copolymerization of a pre-formed substrate | Emerging Cross-Sectional Technologies | 51 | Expired |
| US6884457B2 | System and method for treating articles with fluids | Human Necessities | 46 | Expired |
| US4311573A | Process for graft copolymerization of a pre-formed substrate | Emerging Cross-Sectional Technologies | 46 | Expired |
| US7032251B2 | Crosslinking agent for coated elastomeric articles | Human Necessities | 34 | Expired |
| US4791175A | Particulate hydroperoxidized poly-n-vinyl lactam, its preparation and use thereof | Chemistry; Metallurgy | 26 | Expired |
| US7712353B2 | Ultrasonic liquid treatment system | Performing Operations; Transporting | 20 | Active |
| US5480927A | Method of increasing the concentration of radiation-absorbing agents in optical and ophthalmic lenses | Physics | 20 | Expired |
| US4934828A | Apparatus for mixing viscous materials | Performing Operations; Transporting | 19 | Expired |
| US4642246A | Process for chemically bonding a lubricant to a magnetic disk | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6638451B1 | Plastic casting molds | Emerging Cross-Sectional Technologies | 18 | Expired |
| US7703698B2 | Ultrasonic liquid treatment chamber and continuous flow mixing system | Performing Operations; Transporting | 17 | Active |
| US5266077A | Method for tinting a hydrophilic contact lens | Physics | 16 | Expired |
| US7785674B2 | Delivery systems for delivering functional compounds to substrates and processes of using the same | Chemistry; Metallurgy | 15 | Active |
| US6665095B1 | Apparatus for hybrid printing | Performing Operations; Transporting | 13 | Expired |
| US6717699B1 | Method for hybrid printing | Performing Operations; Transporting | 11 | Expired |
| US4595632A | Fluorocarbon grafting of polymeric substrates | Emerging Cross-Sectional Technologies | 10 | Expired |
| US7604856B2 | Heat transfer paper with peelable film and discontinuous coatings | Emerging Cross-Sectional Technologies | 10 | Active |
| US8163388B2 | Compositions comprising metal-modified silica nanoparticles | Emerging Cross-Sectional Technologies | 9 | Active |
| US8685178B2 | Methods of preparing metal-modified silica nanoparticles | Human Necessities | 9 | Active |
| US4678838A | Particulate hydroperoxidized poly-N-vinyl lactam, its preparation and use thereof | Chemistry; Metallurgy | 8 | Expired |
| US4965026A | Process for hydroxylating hydrophobic polymer surfaces | Physics | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.